brakes WBA1-75-SC Active Hydraulic Disc Brake experienced, global, reliable wind turbine Customer Options Key Features

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1 WBA1-75-SC The WBA1-75-SC has been specifically designed to meet the exacting requirements of Wind Turbine rotor braking applications, where guaranteed stopping and holding performance is required in both emergency and routine maintenance situations. The WBA1-75-SC is designed for gearbox mounting and features a floating brake caliper. This enables the brake to self-centre on the brake disc during operation, catering for axial displacements in the drive train. Constructed from ductile cast iron, the WBA1-75-SC has a single 75 mm diameter piston, features a proprietary piston seal and protection boot design, and is fitted with thrust plates, lining wear indicators and a position backstop as standard. This unique combination of features ensures that the WBA1-75-SC provides reliable long term operation over extremes of environmental conditions, and simplified in-service inspection and maintenance for the duration of the Wind Turbine s lifetime. Key Features Hydraulically applied brake Sintered metallic linings for high speed/high energy applications Large brake lining area for reduced wear and reduced operating temperatures Lining retraction springs to eliminate brake drag when brake is not applied Lining thrust plates for faster lining replacement Electrical lining wear status indicator Hydraulic drain ports to prevent oil contamination on the brake disc Small air gap (between disc and lining) for minimum brake reaction time Few moving parts for increased lifetime and easy maintenance -40 C to 70 C operational range Customer Options Carlisle NoiseFree organic (non-asbestos) linings Extreme cold climate (-50 C) version Offshore version available Fully customised caliper designs brakes wind turbine

2 WBA1-75-SC Specification WBA1-75-SC Brake type Active hydraulic, floating caliper Piston quantity & diameter, mm 1 x 75 Operating pressure (Max), bar 160 Clamp force (Max), kn 70.6 Tangential brake force (Max), kn 56.5 (based on µ= 0.4) Floating range on axles, towards mounting, mm 5 Floating range on axles, away from mounting, mm 10 Oil volume per 1mm stroke, cm Pressure connection port 2 ports, ¼ B.S.P. Drain connection port 1 port, ¼ B.S.P. Lining type Sintered (organic as option) Brake lining width, mm 125 Allowable lining wear per side (Max), mm 7 Lining surface area (per caliper half), cm (sintered), 290 (organic) Disc thickness, mm 30 standard (20-70 upon request) Disc diameter (Min), mm 500 Weight (caliper and linings), kg 73 Operational temperature range, C -40 to 70 Please contact Carlisle for an application specific brake performance and compatibility report Installation drawings, DWG and DXF files are available upon request wind.sales@carlislebrake.com 12/09 / rev Carlisle Industrial Brake & Friction Carlisle reserves the right to revise or change products or specifications at any time without prior notice

3 WBA1-90-SC The WBA1-90-SC has been specifically designed to meet the exacting requirements of Wind Turbine rotor braking applications, where guaranteed stopping and holding performance is required in both emergency and routine maintenance situations. The WBA1-90-SC is designed for gearbox mounting and features a floating brake caliper. This enables the brake to self-centre on the brake disc during operation, catering for axial displacements in the drive train. Constructed from ductile cast iron, the WBA1-90-SC has a single 90 mm diameter piston, features a proprietary piston seal and protection boot design, and is fitted with thrust plates, lining wear indicators and a position backstop as standard. This unique combination of features ensures that the WBA1-90-SC provides reliable long term operation over extremes of environmental conditions, and simplified in-service inspection and maintenance for the duration of the Wind Turbine s lifetime. Key Features Hydraulically applied brake Sintered metallic linings for high speed/high energy applications Large brake lining area for reduced wear and reduced operating temperatures Lining retraction springs to eliminate brake drag when brake is not applied Lining thrust plates for faster lining replacement Electrical lining wear status indicator Hydraulic drain ports to prevent oil contamination on the brake disc Small air gap (between disc and lining) for minimum brake reaction time Few moving parts for increased lifetime and easy maintenance -40 C to 70 C operational range Customer Options Carlisle NoiseFree organic (non-asbestos) linings Extreme cold climate (-50 C) version Offshore version available Fully customised caliper designs brakes wind turbine

4 WBA1-90-SC Specification WBA1-90-SC Brake type Active hydraulic, floating caliper Piston quantity & diameter, mm 1 x 90 Operating pressure (Max), bar 160 Clamp force (Max), kn 99 Tangential brake force (Max), kn 79 (based on µ= 0.4) Floating range on axles, towards mounting, mm 5 Floating range on axles, away from mounting, mm 10 Oil volume per 1mm stroke, cm Pressure connection port 2 ports, ¼ B.S.P. Drain connection port 1 port,¼ B.S.P. Lining type Sintered (organic as option) Brake lining width, mm 125 Allowable lining wear per side (Max), mm 7 Lining surface area (per caliper half), cm (sintered), 290 (organic) Disc thickness, mm 30 standard (20-70 upon request) Disc diameter (Min), mm 500 Weight (caliper and linings), kg 73 Operational temperature range, C -40 to 70 Please contact Carlisle for an application specific brake performance and compatibility report Installation drawings, DWG and DXF files are available upon request wind.sales@carlislebrake.com 12/09 / rev Carlisle Industrial Brake & Friction Carlisle reserves the right to revise or change products or specifications at any time without prior notice

5 WBA4-90 The WBA4-90 has been specifically designed to meet the exacting requirements of Wind Turbine yaw and rotor braking applications, where high braking and holding torques are required over long operational periods. The WBA4-90 is constructed from ductile cast iron, has two symmetrical halves each containing two 90mm diameter pistons, and features a proprietary piston seal and protection boot design. This unique combination of features ensures that the WBA4-90 provides reliable long term operation over extremes of environmental conditions, and simplified in-service inspection and maintenance for the duration of the Wind Turbine s lifetime. Key Features Hydraulically applied brake Carlisle NoiseFree organic (non-asbestos) linings Large brake lining area for reduced wear and operating temperatures Grooved and tapered linings for improved performance and lifetime Hydraulic drain ports to prevent oil contamination on the brake disc Small air gap (between disc and lining) for minimum brake reaction time Few moving parts for increase lifetime and easy maintenance Suitable for horizontal or vertical installation -40 C to 70 C operational range Customer Options Lining retraction springs for dynamic applications Sintered linings for high energy applications Thrust plates for faster lining replacement Concave and convex linings available Extreme cold climate (-50 C) version Offshore version available Fully customised caliper designs available brakes wind turbine

6 WBA4-90 Specification WBA4-90 Brake type Active hydraulic, split caliper Piston quantity & diameter, mm 4 x 90 Operating pressure (Max), bar 172 Clamp force (Max), kn Tangential brake force (Max), kn 170 (based on µ= 0.4) Oil volume per 1mm stroke, cm 3 25 Pressure connection port 4 ports, ¼ B.S.P. Drain connection port 2 ports, ¼ B.S.P. Lining type Organic (sintered as option) Brake lining width, mm 108 Allowable lining wear per side (Max), mm 10 Lining surface area (per caliper half), cm Disc thickness, mm 30 standard (20-70 upon request) Disc diameter (Min), mm 1000 Weight (caliper and linings), kg 55 Operational temperature range, C -40 to 70 Please contact Carlisle for an application specific brake performance and compatibility report Installation drawings, DWG and DXF files are available upon request wind.sales@carlislebrake.com 12/09 / rev Carlisle Industrial Brake & Friction Carlisle reserves the right to revise or change products or specifications at any time without prior notice

7 WBA6-120 The WBA6-120 has been specifically designed to meet the exacting requirements of Wind Turbine yaw and rotor braking applications, where high braking and holding torques are required over long operational periods. The WBA6-120 is constructed from ductile cast iron, has two symmetrical halves each containing three 120mm diameter pistons, and features a proprietary piston seal and protection boot design. This unique combination of features ensures that the WBA6-120 provides reliable long term operation over extremes of environmental conditions, and simplified in-service inspection and maintenance for the duration of the Wind Turbine s lifetime. Key Features Hydraulically applied brake Carlisle NoiseFree organic (non-asbestos) linings Large brake lining area for reduced wear and operating temperatures Grooved and tapered linings for improved performance and lifetime Hydraulic drain ports to prevent oil contamination on the brake disc Small air gap (between disc and lining) for minimum brake reaction time Few moving parts for increased lifetime and easy maintenance Suitable for horizontal or vertical installation -40 C to 70 C operational range Customer Options Lining retraction springs for dynamic applications Sintered linings for high energy applications Thrust plates for faster lining replacement Extreme cold climate (-50 C) version Offshore version available Fully customised caliper designs available brakes wind turbine

8 WBA6-120 Specification WBA6-120 Brake type Active hydraulic, Split caliper Piston quantity & diameter, mm 6 x 120 Operating pressure (Max), bar 172 Clamp force (Max), kn 590 Tangential brake force (Max), kn 472 (based on µ= 0.4) Oil volume per 1mm stroke, cm 3 68 Pressure connection port 4 ports, ¼ B.S.P. Drain connection port 2 ports, ¼ B.S.P. Lining type Organic (sintered as option) Brake lining width, mm 138 Allowable lining wear per side (Max), mm 7 Lining surface area (per caliper half), cm Disc thickness, mm 40 standard (20-70 upon request) Disc diameter (Min), mm 2000 Weight (caliper and linings), kg 185 Operational temperature range, C -40 to 70 Please contact Carlisle for an application specific brake performance and compatibility report Installation drawings, DWG and DXF files are available upon request wind.sales@carlislebrake.com 12/09 / rev Carlisle Industrial Brake & Friction Carlisle reserves the right to revise or change products or specifications at any time without prior notice

9 WBF1-89-SC Spring Applied Disc Brake The WBF1-89-SC has been specifically designed to meet the exacting requirements of Wind Turbine rotor braking applications, where failsafe stopping power is required when hydraulic power cannot be guaranteed. The WBF1-89-SC is designed for gearbox mounting and features a spring applied, floating caliper. This enables the brake to self-centre on the disc during operation, catering for axial displacements in the drive train. Constructed from ductile cast iron, the WBF1-89-SC has one 80 mm diameter spring pack, and is fitted with a position backstop as standard to minimise brake response times. This unique combination of features ensures that the WBF1-89-SC provides reliable long term operation over extremes of environmental conditions, and simplified in-service inspection and maintenance for the duration of the Wind Turbine s lifetime. Key Features Spring applied (failsafe), hydraulically released Range of spring packs available for varied braking forces Self-centering design to eliminate lining drag Offset adjustment mechanism to compensate for lining wear Low weight for simplified installation and maintenance Sintered metallic linings for high speed/high energy applications Large brake lining area for reduced wear and reduced operating temperatures Lining retraction system to eliminate brake drag when brake is not applied Small air gap (between disc and lining) for minimum brake reaction time Few moving parts for increased lifetime and easy maintenance -40 C to 70 C operational range Customer Options Carlisle NoiseFree organic (non-asbestos) linings Electrical lining wear status indicator Extreme cold climate (-50 C) version Offshore version available Fully customised caliper designs brakes wind turbine

10 WBF1-89-SC Spring Applied Disc Brake Specification WBF1-89-SC Brake type Spring applied, floating caliper Piston quantity & diameter, mm 1 x 89 Clamp force (Max), kn 29.4 Tangential brake force (Max), kn 11.7 (based on µ= 0.4) Release Pressure, bar Floating range on axles, towards mounting, mm 1.3 Floating range on axles, away from mounting, mm 1.3 Oil volume per 1mm stroke, cm Pressure connection port 1 port, 7/16 SAE. Lining type Sintered (organic as option) Brake lining width, mm 56 Allowable lining wear per side (Max), mm 5 Lining surface area (per caliper half), cm (sintered), 56 (organic) Disc thickness, mm (others upon request) Disc diameter (Min), mm 254 Weight (caliper and linings), kg 13 (excluding mounting bracket) Operational temperature range, C -20 to 70 Please contact Carlisle for an application specific brake performance and compatibility report Installation drawings, DWG and DXF files are available upon request wind.sales@carlislebrake.com 12/09 / rev Carlisle Industrial Brake & Friction Carlisle reserves the right to revise or change products or specifications at any time without prior notice

11 WBF2-89-SC Spring Applied Disc Brake The WBF2-89-SC has been specifically designed to meet the exacting requirements of Wind Turbine rotor braking applications, where failsafe stopping power is required when hydraulic power cannot be guaranteed. The WBF2-89-SC is designed for gearbox mounting and features a spring applied, floating caliper. This enables the brake to self-centre on the disc during operation, catering for axial displacements in the drive train. Constructed from ductile cast iron, the WBF2-89-SC has two 80 mm diameter spring packs, and is fitted with a position backstop as standard to minimise brake response times. This unique combination of features ensures that the WBF2-89-SC provides reliable long term operation over extremes of environmental conditions, and simplified in-service inspection and maintenance for the duration of the Wind Turbine s lifetime. Key Features Spring applied (failsafe), hydraulically released Range of spring packs available for varied braking forces Self-centering design to eliminate lining drag Offset adjustment mechanism to compensate for lining wear Open caliper design for simplified inspection Low weight for simplified installation and maintenance Sintered metallic linings for high speed/high energy applications Large brake lining area for reduced wear and reduced operating temperatures Lining retraction system to eliminate brake drag when brake is not applied Small air gap (between disc and lining) for minimum brake reaction time Few moving parts for increased lifetime and easy maintenance -40 C to 70 C operational range Customer Options Carlisle NoiseFree organic (non-asbestos) linings Electrical lining wear status indicator Extreme cold climate (-50 C) version Offshore version available Fully customised caliper designs brakes wind turbine

12 WBF2-89-SC Spring Applied Disc Brake Specification WBF2-89-SC Brake type Spring applied, floating caliper Piston quantity & diameter, mm 2 x 89 Clamp force (Max), kn 73 Tangential brake force (Max), kn 58 (based on µ= 0.4) Release Pressure, bar Floating range on axles, towards mounting, mm 5 Floating range on axles, away from mounting, mm 10 Oil volume per 1mm stroke, cm Pressure connection port 1 port, 7/16 SAE. Lining type Sintered (organic as option) Brake lining width, mm 230 Allowable lining wear per side (Max), mm 7 Lining surface area (per caliper half), cm (sintered), 285 (organic) Disc thickness, mm 12.7 & 25.4 (others upon request) Disc diameter (Min), mm 362 Weight (caliper and linings), kg 31 (excluding mounting bracket) Operational temperature range, C -40 to 70 Please contact Carlisle for an application specific brake performance and compatibility report Installation drawings, DWG and DXF files are available upon request wind.sales@carlislebrake.com 12/09 / rev Carlisle Industrial Brake & Friction Carlisle reserves the right to revise or change products or specifications at any time without prior notice